Yugoslavs (Serbo-Croat-Bosnian: Jugoslaveni, Jugosloveni; Serbo-Croat-Bosnian Cyrillic: Југославени, Југословени; Macedonian: Југословени; Slovene: Jugoslovani) is a designation that was originally designed to refer to a united South Slav people. It has been used in two connotations, the first in an ethnic or supra-ethnic connotation, and the second as a term for citizens of the former Yugoslavia. Cultural and political advocates of Yugoslav identity have historically ascribed the identity to be applicable to all people of South Slav heritage, including those of Bosnia and Herzegovina, Bulgaria, Croatia, Montenegro, Serbia, Slovenia, and the Republic of Macedonia.There had on three occasions been efforts to make Bulgaria a part of Yugoslavia or part of an even larger federation: through Aleksandar Stamboliyski during and after World War I; through Zveno during the Bulgarian coup d'état of 1934, and through Georgi Dimitrov during and after World War II, but for various reasons, each attempt would be unsuccessful.